Home Capital Group Inc. began suspending mortgage brokers after its board of directors received an anonymous letter last fall complaining of “irregularities” about the income documentation of some of its insured mortgage borrowers, company officials confirmed Thursday.

Shares in Toronto-based toy company Spin Master Corp. opened higher in its debut on the Toronto stock exchange. The company went public at $18 a share. The stock briefly rose to $18.64 a share before falling back to just above $18.